Laboratory-Scale Experimental Setup for Studying Cable Dampers
Laboratory-Scale Experimental Setup for Studying Cable Dampers
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DOI：
10.1061/(asce)em.1943-7889.0000878
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发表时间：
2015-05
期刊：
影响因子：
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通讯作者：
Lin Chen;Limin Sun
中科院分区：
文献类型：
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作者：
Lin Chen;Limin Sun
摘要本研究提出了一种实验室规模的实验装置，可以模拟带有横向阻尼器的全尺寸斜拉索的动力学，从而可以在实验室环境中评估和比较不同类型阻尼器的全尺寸性能。该试验方案类似于混合试验，保留了实验的物理结构部件，但它使用等效模型来表示大型主体结构，而不是混合试验中使用的数值模拟。对于电缆，提出了一种可行的模型，该模型由两个垂直悬挂的柔性梁组成，其上端固定，下端由刚性质量连接；阻尼器横向连接到其中一根梁上。该装置被建模为带有终端质量和中间阻尼器的夹紧引导支撑的张拉梁，用于动态分析，并且特征方程是根据梁段的动态刚度矩阵制定的。模态性质...
AbstractThis study proposes a laboratory-scale experimental setup that simulates the dynamics of a full-scale stay cable with a transverse damper, allowing the full-scale performance of different types of dampers to be evaluated and compared in a laboratory setting. This test scheme resembles hybrid testing in that it retains the physical structural component for experiments, whereas it uses an equivalent model to represent the large-scale main structure instead of the numerical simulation used in a hybrid test. For the cable, a feasible model is presented that is composed of two flexible beams that are suspended vertically, fixed at their upper ends, and connected at their lower ends by a rigid mass; the damper is attached transversely to one of the beams. The setup is modeled as tensioned beams for clamped-guided supports with a terminal mass and an intermediate damper for dynamic analysis, and the characteristic equation is formulated from dynamic-stiffness matrices of beam segments. Modal properties o...